环境：
UNIX:macbook pro 2013版
JDK:1.7
HADOOP：2.5.2
program：内置wordcount

已知事宜：
1、集群伪分布；
2、HDFS正常增删改查；
3、自己写的wordcount在其他集群测试通过，在该集群会报与内置一样的错误；

各配置文件：
core-site.xml

    
        fs.defaultFS
        hdfs://localhost:9000
    
    
        hadoop.tmp.dir
        /dlb/bigdata/tmp/hadoop
    

hdfs-site.xml

    
        dfs.replication
        1
    
    
        dfs.namenode.name.dir
        /dlb/bigdata/data/hdfs/name
    
    
        dfs.datanode.data.dir
        /dlb/bigdata/data/hdfs/data
    

mapred-site.xml
这个结尾是tmp，要cp一个出来，结尾.xml，然后开始配置

    
        mapreduce.framework.name
        yarn
    

yarn-site.xml

    
        yarn.nodemanager.aux-services
        mapreduce_shuffle
    
    
        yarn.resourcemanager.address
        localhost:18040
    
    
        yarn.resourcemanager.scheduler.address
        localhost:18030
    
    
        yarn.resourcemanager.webapp.address
        localhost:8088
    
    
        yarn.resourcemanager.resource-tracker.address
        localhost:8025
    

错误代码：

Pro:hadoop-2.5.2 root# hadoop jar share/hadoop/mapreduce/sources/hadoop-mapreduce-examples-2.5.2-sources.jar org.apache.hadoop.examples.WordCount input output

15/08/21 16:29:02 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
15/08/21 16:29:03 INFO client.RMProxy: Connecting to ResourceManager at localhost/127.0.0.1:18040
15/08/21 16:29:03 INFO input.FileInputFormat: Total input paths to process : 1
15/08/21 16:29:04 INFO mapreduce.JobSubmitter: number of splits:1
15/08/21 16:29:04 INFO mapreduce.JobSubmitter: Submitting tokens for job: job_1440144724776_0002
15/08/21 16:29:09 INFO impl.YarnClientImpl: Submitted application application_1440144724776_0002
15/08/21 16:29:10 INFO mapreduce.JobSubmitter: Cleaning up the staging area /tmp/hadoop-yarn/staging/root/.staging/job_1440144724776_0002
Exception in thread "main" java.io.IOException: java.lang.NullPointerException
at org.apache.hadoop.mapred.ClientServiceDelegate.invoke(ClientServiceDelegate.java:334)
at org.apache.hadoop.mapred.ClientServiceDelegate.getJobStatus(ClientServiceDelegate.java:419)
at org.apache.hadoop.mapred.YARNRunner.submitJob(YARNRunner.java:303)
at org.apache.hadoop.mapreduce.JobSubmitter.submitJobInternal(JobSubmitter.java:432)
at org.apache.hadoop.mapreduce.Job$10.run(Job.java:1285)
at org.apache.hadoop.mapreduce.Job$10.run(Job.java:1282)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:415)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1614)
at org.apache.hadoop.mapreduce.Job.submit(Job.java:1282)
at org.apache.hadoop.mapreduce.Job.waitForCompletion(Job.java:1303)
at org.apache.hadoop.examples.WordCount.main(WordCount.java:87)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.apache.hadoop.util.RunJar.main(RunJar.java:212)
Caused by: java.lang.NullPointerException
at org.apache.hadoop.mapreduce.v2.proto.MRProtos$JobReportProto$Builder.setTrackingUrl(MRProtos.java:11418)
at org.apache.hadoop.mapreduce.v2.api.records.impl.pb.JobReportPBImpl.setTrackingUrl(JobReportPBImpl.java:241)
at org.apache.hadoop.mapred.NotRunningJob.getJobReport(NotRunningJob.java:142)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.apache.hadoop.mapred.ClientServiceDelegate.invoke(ClientServiceDelegate.java:320)
... 16 more

麻烦各位大神能给出一个答案，谢谢，困惑已久。